Data Types and Why We Care | Written Assignment |

Data Types and Why We assist Written Assignment Kayla 1/30/2013 Kayla Coleman Wednesday, January 30, 2013 Principles of Testing and Measurements Data Types and Why We administer There argon a zillion different types of selective info in the world. roughly types we pull in learned through geezerhood of education and others have yet to be discovered. One question ab break data types that is asked frequently is Why do we care? Though in that respect is no schoolbook book serve up I intrust we care because without these various types of data we lead non be able to come even the simplest of questions.When I think of the rendering a simple question I think of a question that rouse be answered in a a couple of(pre token(a)) words. A simple question that I would wish well answered is What Is Your Favorite Color? I have picked this question because it is simple to answer and understand. My method of step for this question would be by ranking. For example blue would be ranked the highest because most students liked blue. I have picked basic rating because it is the vanquish way to find the answer that I need without added confound when it comes to understanding the results.There are many different levels of measurement. All levels have different ways itemises eject be used. One level is the token(a) level. At this level Numbers enkindle be used for tags or labels like Barcodes and social security numbers. When using nominal variables measurement means is classified as classifying cases in groups. These groups must cover in all cases and can not belong to several(prenominal) groups (Levels of measurement,). Ordinal Level is another level of measure. With this kind of measure Numbers are mostly used to order rightful(prenominal) like in popularity.You have the jerks, the cheerleaders and the Nerds tho we all know what order there is. The groups for ordinal variables are ordered exclusively the distance between cardinal adjoining categ ories may vary. musical interval or balance Level is the third level of measurement. With Interval or Ratio Levels numbers are used to express quantities like the keep down of money you pay for shoes in this case numbers are not just all-inclusive, mutually exclusive or ordered (Levels of measurement,). There are a lot more ways of measurement then we acknowledge like underlying tendency.Central tendency tells us where the middle of a bunch of data lies. The most usual measures of central tendency are the mean, median, and mode. The loaded is the sum of the numbers divided by the number of numbers in a set of data. The Median is the number in the middle or the mean of 2 numbers in the middle when ordered in ascending or go order. The mode is the most frequent number in the set (Saccuzzo & Kaplan, 2010). Stand excursion and the Z pee-pee are two more types of measure that can be used.The Standard Deviation measures the unfold out of numbers. A measure of the more spread ap art the higher the dispute. Standard deviation can be calculatedas the root of variance, which is the average of from the Mean. The Z label explains if a score is equal to, below or above the mean of a group of scores. Basically, it compares scores. The normal Z score is between -2 and +2. Anything other than this are considered little typical of scores (Saccuzzo & Kaplan, 2010). Survey query is one way of measurement.Survey olfactory modality into is owing(p) when answering of respondents. It can be a paper-and-pencil form or a person-to-person in-depth interview. Scaling is another way of measurement it deals with the construction of an instrument that relates to qualitative and vicenary metric units. The purpose of qualitative query is to gain more exposure to an force field (Trochim, 2006). Qualitative research is good for obtaining in truth detailed information that allows you to examine the realm of interest in great detail.However alike much detail does make it touchy to determine what the generalized theme is. An collateral measure is an unobtrusive measure that allows researchers to meet data without doing a formal occasion (Trochim, 2006). I believe that a questionnaire would own me the most valid answers to this question. Overall, the large pith of data and measures of data is very overpowering if you do not know what to look for especially if two methods measure the uniform thing.However that is a large amount of information out there that can dish up us clear up the confusing methods of measures this way we can have a valid more efficient research outcome. Reference Levels of measurement. (n. d. ). Retrieved from http//weber. ucsd. edu/aronatas/levmeas. html Saccuzzo, D. , & Kaplan, R. (2010). Psychological examination Principles, applications, and issues. New York, NY Trochim, W. (2006, October 20). Research methods knowledge based. Retrieved from http//www. socialresearchmethods. discharge/kb/unobtrus. php